Finding the Fourth Proportional to 874,128,395.36, 1,206,300,321.18 and 477,651,376.70
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Solution
The fourth proportional to 874,128,395.36, 1,206,300,321.18 and 477,651,376.70 is: 659,160,613.23
Step by Step Solution
- Step 1: Write the proportion equation
874,128,395.36 : 1,206,300,321.18 = 477,651,376.70 : x - Step 2: Convert to fraction form
874,128,395.36/1,206,300,321.18 = 477,651,376.70/x - Step 3: Cross multiply
874,128,395.36x = 1,206,300,321.18 × 477,651,376.70 - Step 4: Simplify right side
874,128,395.36x = 576,191,009,125,279,168 - Step 5: Solve for x
x = 576,191,009,125,279,168/874,128,395.36 - Step 6: Final answer
x = 659,160,613.23
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.